Mahavishnu is AWESOME. I Have Birds of Fire and The Inner Mounting Flame on CD. I also love his guitar work on Miles' In A Silent Way and the Jack Johnson soundtrack.
Yeah, another great!
I thought at one time that I had all his recorded work, but a dash of fucking internet research and I found that I was quite wrong. I may be approaching the half-way point. His library is enormous, due mainly to his session work over the years.
... and I had some that I did not even know that I had, because I did not know it was him playing. It's kind of god-like to be so stealthy.